/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification of Java bytecode.
 *
 * Copyright (c) 2002-2018 GuardSquare NV
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
 * version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package proguard.classfile.attribute.annotation.visitor;

import a.annotation.proguard.classfile.attribute.annotation.*;
import proguard.classfile.*;
import proguard.classfile.attribute.*;
import proguard.classfile.attribute.visitor.AttributeVisitor;
import proguard.classfile.util.SimplifiedVisitor;

/**
 * This AttributeVisitor and AnnotationVisitor lets a given ElementValueVisitor visit all ElementValue objects of the
 * attributes or annotations that it visits.
 *
 * @author Eric Lafortune
 */
public class AllElementValueVisitor extends SimplifiedVisitor
    implements AttributeVisitor, AnnotationVisitor, ElementValueVisitor {
    private final boolean deep;
    private final ElementValueVisitor elementValueVisitor;

    /**
     * Creates a new AllElementValueVisitor.
     * 
     * @param elementValueVisitor the AllElementValueVisitor to which visits will be delegated.
     */
    public AllElementValueVisitor(ElementValueVisitor elementValueVisitor) {
        this(false, elementValueVisitor);
    }

    /**
     * Creates a new AllElementValueVisitor.
     * 
     * @param deep specifies whether the element values further down the hierarchy should be visited too.
     * @param elementValueVisitor the AllElementValueVisitor to which visits will be delegated.
     */
    public AllElementValueVisitor(boolean deep, ElementValueVisitor elementValueVisitor) {
        this.deep = deep;
        this.elementValueVisitor = elementValueVisitor;
    }

    // Implementations for AttributeVisitor.

    public void visitAnyAttribute(Clazz clazz, Attribute attribute) {}

    public void visitRuntimeVisibleAnnotationsAttribute(Clazz clazz,
        RuntimeVisibleAnnotationsAttribute runtimeVisibleAnnotationsAttribute) {
        // Visit the annotations.
        runtimeVisibleAnnotationsAttribute.annotationsAccept(clazz, this);
    }

    public void visitRuntimeVisibleAnnotationsAttribute(Clazz clazz, Field field,
        RuntimeVisibleAnnotationsAttribute runtimeVisibleAnnotationsAttribute) {
        // Visit the annotations.
        runtimeVisibleAnnotationsAttribute.annotationsAccept(clazz, field, this);
    }

    public void visitRuntimeVisibleAnnotationsAttribute(Clazz clazz, Method method,
        RuntimeVisibleAnnotationsAttribute runtimeVisibleAnnotationsAttribute) {
        // Visit the annotations.
        runtimeVisibleAnnotationsAttribute.annotationsAccept(clazz, method, this);
    }

    public void visitRuntimeInvisibleAnnotationsAttribute(Clazz clazz,
        RuntimeInvisibleAnnotationsAttribute runtimeInvisibleAnnotationsAttribute) {
        // Visit the annotations.
        runtimeInvisibleAnnotationsAttribute.annotationsAccept(clazz, this);
    }

    public void visitRuntimeInvisibleAnnotationsAttribute(Clazz clazz, Field field,
        RuntimeInvisibleAnnotationsAttribute runtimeInvisibleAnnotationsAttribute) {
        // Visit the annotations.
        runtimeInvisibleAnnotationsAttribute.annotationsAccept(clazz, field, this);
    }

    public void visitRuntimeInvisibleAnnotationsAttribute(Clazz clazz, Method method,
        RuntimeInvisibleAnnotationsAttribute runtimeInvisibleAnnotationsAttribute) {
        // Visit the annotations.
        runtimeInvisibleAnnotationsAttribute.annotationsAccept(clazz, method, this);
    }

    public void visitAnyParameterAnnotationsAttribute(Clazz clazz, Method method,
        ParameterAnnotationsAttribute parameterAnnotationsAttribute) {
        // Visit the annotations.
        parameterAnnotationsAttribute.annotationsAccept(clazz, method, this);
    }

    public void visitAnnotationDefaultAttribute(Clazz clazz, Method method,
        AnnotationDefaultAttribute annotationDefaultAttribute) {
        // Visit the default element value.
        annotationDefaultAttribute.defaultValueAccept(clazz, this);
    }

    // Implementations for AnnotationVisitor.

    public void visitAnnotation(Clazz clazz, Annotation annotation) {
        annotation.elementValuesAccept(clazz, this);
    }

    public void visitAnnotation(Clazz clazz, Field field, Annotation annotation) {
        annotation.elementValuesAccept(clazz, this);
    }

    public void visitAnnotation(Clazz clazz, Method method, Annotation annotation) {
        annotation.elementValuesAccept(clazz, this);
    }

    public void visitAnnotation(Clazz clazz, Method method, int parameterIndex, Annotation annotation) {
        annotation.elementValuesAccept(clazz, this);
    }

    public void visitAnnotation(Clazz clazz, Method method, CodeAttribute codeAttribute, Annotation annotation) {
        annotation.elementValuesAccept(clazz, this);
    }

    // Implementations for ElementValueVisitor.

    public void visitConstantElementValue(Clazz clazz, Annotation annotation,
        ConstantElementValue constantElementValue) {
        elementValueVisitor.visitConstantElementValue(clazz, annotation, constantElementValue);
    }

    public void visitEnumConstantElementValue(Clazz clazz, Annotation annotation,
        EnumConstantElementValue enumConstantElementValue) {
        elementValueVisitor.visitEnumConstantElementValue(clazz, annotation, enumConstantElementValue);
    }

    public void visitClassElementValue(Clazz clazz, Annotation annotation, ClassElementValue classElementValue) {
        elementValueVisitor.visitClassElementValue(clazz, annotation, classElementValue);
    }

    public void visitAnnotationElementValue(Clazz clazz, Annotation annotation,
        AnnotationElementValue annotationElementValue) {
        elementValueVisitor.visitAnnotationElementValue(clazz, annotation, annotationElementValue);

        if (deep) {
            annotationElementValue.annotationAccept(clazz, this);
        }
    }

    public void visitArrayElementValue(Clazz clazz, Annotation annotation, ArrayElementValue arrayElementValue) {
        elementValueVisitor.visitArrayElementValue(clazz, annotation, arrayElementValue);

        if (deep) {
            arrayElementValue.elementValuesAccept(clazz, annotation, elementValueVisitor);
        }
    }
}
